VC6.0图形处理6--图像增强

源码下载：http://download.csdn.net/detail/renshengrumenglibing/3875522

//本节包含高斯平滑，中值滤波和锐化三个部分，三者均为模板操作，只是模板不同，算法均相同，希望读者仔细研读其中之一，其他两个自然就明白了

void CBMPViewerDoc::OnMenuitem32790() //高斯平滑

{

// TODO: Add your command handler code here

//模板1/16*[1 2 1 ; 2 ,4 ,2 ; 1, 2,1]

int linewidth;

linewidth=(pbi->bmiHeader.biWidth*pbi->bmiHeader.biBitCount+31)/32*4;

HLOCAL hTemp;

hTemp = LocalAlloc(LHND ,linewidth * bi.biHeight );

LPSTR lpTemp;

lpTemp = (char*)LocalLock(hTemp);

unsigned char *lpScr;

unsigned char * lpDest;

int sum ;

int Gauss[9] = {1, 2, 1 , 2 ,4 ,2 , 1, 2,1 };

// TODO: Add your command handler code here

for(int i = 0 ; i< bi.biHeight ; i++){

for(int j = 0 ; j< bi.biWidth ; j++){

lpDest = (unsigned char *)lpTemp + linewidth *(bi.biHeight - i -1) + j;

if((i == 0 ) || (j ==0) || (i == bi.biHeight) || (j == bi.biWidth) ){

lpScr = (unsigned char*)lpBuf + linewidth*(bi.biHeight - i -1) + j;

*lpDest = *lpScr;

}

else{

sum = 0 ;

for(int m = i -1 ; m <= i+1 ;m++){

for(int n = j-1; n<=j+1; n++){

lpScr = (unsigned char*)lpBuf + linewidth*(bi.biHeight - m -1) + n;

sum += (*lpScr) * Gauss[3*(m - i +1) + n - j +1];

}

}

sum/= 16;

if((sum >= 0 )&&(sum <= 255))

{

*lpDest = sum;

}

else if(sum > 255) *lpDest = 255;

else *lpDest= 0;

}

}

}



memcpy(lpBuf, lpTemp, linewidth * bi.biHeight);

// Invalidata(TRUE);

UpdateAllViews(NULL,0,NULL);

}

void CBMPViewerDoc::OnMenuitem32791() //锐化处理

{

//模板1/16*[1 1 1 ; 1 ,1 ,1 ; 1, 1,1]

int linewidth;

linewidth=(pbi->bmiHeader.biWidth*pbi->bmiHeader.biBitCount+31)/32*4;

HLOCAL hTemp;

hTemp = LocalAlloc(LHND ,linewidth * bi.biHeight );

LPSTR lpTemp;

lpTemp = (char*)LocalLock(hTemp);

unsigned char *lpScr;

unsigned char * lpDest;

int sum ;

int m_template[9] = {0, -1, 0 , -1 ,5 ,-1 , 0, -1,0 };

// TODO: Add your command handler code here

for(int i = 0 ; i< bi.biHeight ; i++){

for(int j = 0 ; j< bi.biWidth ; j++){

lpDest = (unsigned char *)lpTemp + linewidth *(bi.biHeight - i -1) + j;

if((i == 0 ) || (j ==0) || (i == bi.biHeight) || (j == bi.biWidth) ){

lpScr = (unsigned char*)lpBuf + linewidth*(bi.biHeight - i -1) + j;

*lpDest = *lpScr;

}

else{

sum = 0 ;

for(int m = i -1 ; m <= i+1 ;m++){

for(int n = j-1; n<=j+1; n++){

lpScr = (unsigned char*)lpBuf + linewidth*(bi.biHeight - m -1) + n;

sum += (*lpScr) * m_template[3*(m - i +1) + n - j +1];

}

}

if((sum >= 0 )&&(sum <= 255))

{

*lpDest = sum;

}

else if(sum > 255) *lpDest = 255;

else *lpDest= 0;

}

}

}



memcpy(lpBuf, lpTemp, linewidth * bi.biHeight);

// Invalidata(TRUE);

UpdateAllViews(NULL,0,NULL);

}

void CBMPViewerDoc::OnMenuitem32792() //中值滤波

{

//模板1/16*[1 1 1 ; 1 ,1 ,1 ; 1, 1,1]

int linewidth;

linewidth=(pbi->bmiHeader.biWidth*pbi->bmiHeader.biBitCount+31)/32*4;

HLOCAL hTemp;

hTemp = LocalAlloc(LHND ,linewidth * bi.biHeight );

LPSTR lpTemp;

lpTemp = (char*)LocalLock(hTemp);

unsigned char *lpScr;

unsigned char * lpDest;

int sum ;

int m_template[9] = {1, 1, 1 , 1 ,1 ,1 , 1, 1,1 };

// TODO: Add your command handler code here

for(int i = 0 ; i< bi.biHeight ; i++){

for(int j = 0 ; j< bi.biWidth ; j++){

lpDest = (unsigned char *)lpTemp + linewidth *(bi.biHeight - i -1) + j;

if((i == 0 ) || (j ==0) || (i == bi.biHeight) || (j == bi.biWidth) ){

lpScr = (unsigned char*)lpBuf + linewidth*(bi.biHeight - i -1) + j;

*lpDest = *lpScr;

}

else{

sum = 0 ;

for(int m = i -1 ; m <= i+1 ;m++){

for(int n = j-1; n<=j+1; n++){

lpScr = (unsigned char*)lpBuf + linewidth*(bi.biHeight - m -1) + n;

sum += (*lpScr) * m_template[3*(m - i +1) + n - j +1];

}

}

sum/= 9;

if((sum >= 0 )&&(sum <= 255))

{

*lpDest = sum;

}

else if(sum > 255) *lpDest = 255;

else *lpDest= 0;

}

}

}



memcpy(lpBuf, lpTemp, linewidth * bi.biHeight);

// Invalidata(TRUE);

UpdateAllViews(NULL,0,NULL);

}